To uninstall this app, you must select Uninstall from the menu inside the app. The normal way won't work if device admin mode is enabled. To change the password or pin you MUST use the password settings within Unlock With WiFi. If you change the password or pin via Android Settings, Unlock With WiFi might change it back. Warning: This app doesn't work on some phones. Do not install this app on the SD card. It will not be secure if you do. It won't work on phones that have full device encryption enabled. Only PINs and passwords can be used. Patterns and face unlock are not supported.